US12063110B2ActiveUtilityPatentIndex 73
Communication method, MCS receiving method, MCS notification method, and device
Est. expiryJan 19, 2038(~11.6 yrs left)· nominal 20-yr term from priority
H04B 7/0632H04W 24/08H04L 1/0009H04L 27/18H04L 1/0013H04L 1/0003H04L 1/0026H04L 1/0016H04L 1/1854H04L 1/1822H04L 5/0057H04L 5/006
73
PatentIndex Score
2
Cited by
84
References
18
Claims
Abstract
A method, and related apparatuses are disclosed, to provide an MCS corresponding to a lower code rate. The communication method includes: sending a first CQI number to a network device, wherein the first CQI number is determined based on a first CQI table; and receiving an MCS number in a first MCS table from the network device, wherein the first MCS table comprises an entry that is not comprised in the first CQI table, and at least one entry whose modulation scheme is 64QAM in the first CQI table, wherein a BLER corresponding to the first CQI table is 10e-5, and values obtained by multiplying code rates by 1024 in the first CQI table comprise 30 and 50.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1. A method, comprising:
sending a first channel quality indicator (CQI) index to a network device, wherein the first CQI index is determined based on a first CQI table; and
receiving a modulation and coding scheme (MCS) index corresponding to a first MCS table from the network device, wherein the first MCS table comprises at least one entry that is not comprised in the first CQI table, and the first CQI table comprises at least one entry whose modulation scheme is 64 quadrature amplitude modulation (QAM), wherein a block error rate (BLER) corresponding to the first CQI table does not exceed 10e-5, values in the first CQI table corresponding to a multiplication of code rates by 1024 comprise 30 and 50, and wherein spectral efficiency of an entry of an MCS index 0 in the first MCS table is less than or equal to spectral efficiency of an entry of a CQI index 1 in the first CQI table.
2. The method according to claim 1 , wherein the first MCS table comprises all entries other than an entry corresponding to a smallest CQI index in the first CQI table.
3. The method according to claim 1 , wherein an MCS index that is of the entry not comprised in the first CQI table and that is in the first MCS table is one of the following:
the MCS index 0, an MCS index 1, or an MCS index 3.
4. The method according to claim 1 , wherein all entries whose modulation schemes are 64 QAM in the first CQI table are some entries of 64QAM in a second CQI table, and the some entries of 64QAM in the second CQI table are as follows:
the some entries correspond to consecutive CQI indexes, and the some entries comprise at least one entry other than an entry corresponding to a largest CQI index in all entries whose modulation schemes are 64QAM in the second CQI table; or
the some entries comprise N entries whose modulation schemes are 64QAM in the second CQI table and that correspond to consecutive CQI indexes, and a first entry in the N consecutive entries is an entry whose modulation scheme is 64QAM in the second CQI table and that corresponds to a smallest CQI index, wherein N is a positive integer greater than or equal to 1 and less than or equal to 5, wherein the second CQI table is as following:
Code rate ×
Spectral
CQI index
Modulation scheme
[1024]
efficiency
0
Out of range
1
Quadrature phase shift
78
0.1523
keying (QPSK)
2
QPSK
120
0.2344
3
QPSK
193
0.3770
4
QPSK
308
0.6016
5
QPSK
449
0.8770
6
QPSK
602
1.1758
7
16QAM
378
1.4766
8
16QAM
490
1.9141
9
16QAM
616
2.4063
10
64QAM
466
2.7305
11
64QAM
567
3.3223
12
64QAM
666
3.9023
13
64QAM
772
4.5234
14
64QAM
873
5.1152
15
64QAM
948
5.5547.
5. The method according to claim 4 , wherein all the entries whose modulation schemes are 64QAM in the first CQI table are the some entries of 64QAM in the second CQI table, and the some entries of 64QAM in the second CQI table are entries corresponding to a CQI index 10, a CQI index 11, a CQI index 12, and a CQI index 13 in the second CQI table.
6. The method according to claim 1 , wherein each entry in the first CQI table corresponds to one CQI index, and each of some CQI indexes in the first CQI table corresponds to one modulation scheme, one code rate, and one piece of spectral efficiency, and wherein in the first CQI table:
a modulation scheme corresponding to an entry whose CQI index is 3 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 78, and corresponding spectral efficiency is 0.1523;
a modulation scheme corresponding to an entry whose CQI index is 4 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 120, and corresponding spectral efficiency is 0.2344;
a modulation scheme corresponding to an entry whose CQI index is 5 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 193, and corresponding spectral efficiency is 0.3770;
a modulation scheme corresponding to an entry whose CQI index is 6 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 308, and corresponding spectral efficiency is 0.6016;
a modulation scheme corresponding to an entry whose CQI index is 7 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 449, and corresponding spectral efficiency is 0.8770;
a modulation scheme corresponding to an entry whose CQI index is 8 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 602, and corresponding spectral efficiency is 1.1758;
a modulation scheme corresponding to an entry whose CQI index is 9 is 16QAM, a corresponding value obtained by multiplying a code rate by 1024 is 378, and corresponding spectral efficiency is 1.4766;
a modulation scheme corresponding to an entry whose CQI index is 10 is 16QAM, a corresponding value obtained by multiplying a code rate by 1024 is 490, and corresponding spectral efficiency is 1.9141; and
a modulation scheme corresponding to an entry whose CQI index is 11 is 16QAM, a corresponding value obtained by multiplying a code rate by 1024 is 616, and corresponding spectral efficiency is 2.4063.
7. The method according to claim 1 , wherein the values in the first CQI table corresponding to the multiplication of code rates by 1024 further comprise the following values: 78, 120, 193, 308, 449, 602, 378, 490, 616, 466, 567, 666, and 772.
8. The method according to claim 7 , wherein in the first CQI table:
a modulation scheme corresponding to the value 30 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.0586;
a modulation scheme corresponding to the value 50 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.0977;
a modulation scheme corresponding to the value 78 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.1523;
a modulation scheme corresponding to the value 120 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.2344;
a modulation scheme corresponding to the value 193 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.3770;
a modulation scheme corresponding to the value 308 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.6016;
a modulation scheme corresponding to the value 449 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.8770;
a modulation scheme corresponding to the value 602 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 1.1758;
a modulation scheme corresponding to the value 378 obtained by multiplying a code rate by 1024 is 16QAM, and corresponding spectral efficiency is 1.4766;
a modulation scheme corresponding to the value 490 obtained by multiplying a code rate by 1024 is 16QAM, and corresponding spectral efficiency is 1.9141;
a modulation scheme corresponding to the value 616 obtained by multiplying a code rate by 1024 is 16QAM, and corresponding spectral efficiency is 2.4063;
a modulation scheme corresponding to the value 466 obtained by multiplying a code rate by 1024 is 64QAM, and corresponding spectral efficiency is 2.7305;
a modulation scheme corresponding to the value 567 obtained by multiplying a code rate by 1024 is 64QAM, and corresponding spectral efficiency is 3.3223;
a modulation scheme corresponding to the value 666 obtained by multiplying a code rate by 1024 is 64QAM, and corresponding spectral efficiency is 3.9023; and
a modulation scheme corresponding to the value 772 obtained by multiplying a code rate by 1024 is 64QAM, and corresponding spectral efficiency is 4.5234.
9. A communication apparatus, comprising:
at least one processor in communication with at least one memory, the at least one processor being configured, upon execution of instructions stored in the at least one memory, to perform the following steps:
sending a first channel quality indicator (CQI) index to a network device, wherein the first CQI index is determined based on a first CQI table; and
receiving a modulation and coding scheme (MCS) index corresponding to a first MCS table from the network device, wherein the first MCS table comprises at least one entry that is not comprised in the first CQI table, and the first CQI table further comprises at least one entry whose modulation scheme is 64 quadrature amplitude modulation (QAM), wherein a block error rate (BLER) corresponding to the first CQI table does not exceed 10e-5, values in the first CQI table corresponding to a multiplication of code rates by 1024 comprise 30 and 50, and wherein spectral efficiency of an entry of an MCS index 0 in the first MCS table is less than or equal to spectral efficiency of an entry of a COI index 1 in the first CQI table.
10. The communication apparatus according to claim 9 , wherein the first MCS table comprises all entries other than an entry corresponding to a smallest CQI index in the first CQI table.
11. The communication apparatus according to claim 9 , wherein an MCS index that is of the entry not comprised in the first CQI table and that is in the first MCS table is one of the following:
the MCS index 0, an MCS index 1, or an MCS index 3.
12. The communication apparatus according to claim 9 , wherein all entries whose modulation schemes are 64 QAM in the first CQI table are some entries of 64QAM in a second CQI table, and the some entries of 64QAM in the second CQI table are as follows:
the some entries correspond to consecutive CQI indexes, and are at least one entry other than an entry corresponding to a largest CQI index in all entries whose modulation schemes are 64QAM in the second CQI table; or
the some entries comprise N entries whose modulation schemes are 64QAM in the second CQI table and that correspond to consecutive CQI indexes, and a first entry in the N consecutive entries is an entry whose modulation scheme is 64QAM in the second CQI table and that corresponds to a smallest CQI index, wherein N is a positive integer greater than or equal to 1 and less than or equal to 5, wherein the second CQI table is as following:
Code rate ×
Spectral
CQI index
Modulation scheme
[1024]
efficiency
0
Out of range
1
Quadrature phase shift
78
0.1523
keying (QPSK)
2
QPSK
120
0.2344
3
QPSK
193
0.3770
4
QPSK
308
0.6016
5
QPSK
449
0.8770
6
QPSK
602
1.1758
7
16QAM
378
1.4766
8
16QAM
490
1.9141
9
16QAM
616
2.4063
10
64QAM
466
2.7305
11
64QAM
567
3.3223
12
64QAM
666
3.9023
13
64QAM
772
4.5234
14
64QAM
873
5.1152
15
64QAM
948
5.5547.
13. The communication apparatus according to claim 12 , wherein all the entries whose modulation schemes are 64QAM in the first CQI table are the some entries of 64QAM in the second CQI table, and the some entries of 64QAM in the second CQI table are entries corresponding to a CQI index 10, a CQI index 11, a CQI index 12, and a CQI index 13 in the second CQI table.
14. The communication apparatus according to claim 9 , wherein each entry in the first CQI table corresponds to one CQI index, and each of some CQI indexes in the first CQI table corresponds to one modulation scheme, one code rate, and one piece of spectral efficiency, and wherein in the first CQI table:
a modulation scheme corresponding to an entry whose CQI index is 3 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 78, and corresponding spectral efficiency is 0.1523;
a modulation scheme corresponding to an entry whose CQI index is 4 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 120, and corresponding spectral efficiency is 0.2344;
a modulation scheme corresponding to an entry whose CQI index is 5 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 193, and corresponding spectral efficiency is 0.3770;
a modulation scheme corresponding to an entry whose CQI index is 6 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 308, and corresponding spectral efficiency is 0.6016;
a modulation scheme corresponding to an entry whose CQI index is 7 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 449, and corresponding spectral efficiency is 0.8770;
a modulation scheme corresponding to an entry whose CQI index is 8 is QPSK, a corresponding value obtained by multiplying a code rate by 1024 is 602, and corresponding spectral efficiency is 1.1758;
a modulation scheme corresponding to an entry whose CQI index is 9 is 16QAM, a corresponding value obtained by multiplying a code rate by 1024 is 378, and corresponding spectral efficiency is 1.4766;
a modulation scheme corresponding to an entry whose CQI index is 10 is 16QAM, a corresponding value obtained by multiplying a code rate by 1024 is 490, and corresponding spectral efficiency is 1.9141; and
a modulation scheme corresponding to an entry whose CQI index is 11 is 16QAM, a corresponding value obtained by multiplying a code rate by 1024 is 616, and corresponding spectral efficiency is 2.4063.
15. The communication apparatus according to claim 9 , wherein the values in the first CQI table corresponding to the multiplication of code rates by 1024 further comprise the following values: 78, 120, 193, 308, 449, 602, 378, 490, 616, 466, 567, 666, and 772.
16. The communication apparatus according to claim 15 , wherein in the first CQI table
a modulation scheme corresponding to the value 30 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.0586;
a modulation scheme corresponding to the value 50 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.0977;
a modulation scheme corresponding to the value 78 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.1523;
a modulation scheme corresponding to the value 120 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.2344;
a modulation scheme corresponding to the value 193 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.3770;
a modulation scheme corresponding to the value 308 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.6016;
a modulation scheme corresponding to the value 449 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 0.8770;
a modulation scheme corresponding to the value 602 obtained by multiplying a code rate by 1024 is QPSK, and corresponding spectral efficiency is 1.1758;
a modulation scheme corresponding to the value 378 obtained by multiplying a code rate by 1024 is 16QAM, and corresponding spectral efficiency is 1.4766;
a modulation scheme corresponding to the value 490 obtained by multiplying a code rate by 1024 is 16QAM, and corresponding spectral efficiency is 1.9141;
a modulation scheme corresponding to the value 616 obtained by multiplying a code rate by 1024 is 16QAM, and corresponding spectral efficiency is 2.4063;
a modulation scheme corresponding to the value 466 obtained by multiplying a code rate by 1024 is 64QAM, and corresponding spectral efficiency is 2.7305;
a modulation scheme corresponding to the value 567 obtained by multiplying a code rate by 1024 is 64QAM, and corresponding spectral efficiency is 3.3223;
a modulation scheme corresponding to the value 666 obtained by multiplying a code rate by 1024 is 64QAM, and corresponding spectral efficiency is 3.9023; and
a modulation scheme corresponding to the value 772 obtained by multiplying a code rate by 1024 is 64QAM, and corresponding spectral efficiency is 4.5234.
17. A communication apparatus, comprising:
at least one processor in communication with at least one memory, the at least one processor configured, upon execution of instructions stored in the at least one memory, to perform the following steps:
receiving a first channel quality indicator (CQI) index corresponding to a first CQI table from a terminal device; and
sending a first modulation and coding scheme (MCS) index, wherein the first MCS index is determined based on a first MCS table, and the first MCS table comprises at least one entry that is not comprised in the first CQI table, and the first CQI table comprises at least one entry whose modulation scheme is 64 quadrature amplitude modulation (QAM), wherein a block error rate BLER corresponding to the first CQI table does not exceed 10e-5, values in the first CQI table corresponding to the multiplication of code rates by 1024 comprise 30 and 50, and wherein spectral efficiency of an entry of an MCS index 0 in the first MCS table is less than or equal to spectral efficiency of an entry of a CQI index 1 in the first COI table.
18. The communication apparatus according to claim 17 , wherein all entries whose modulation schemes are 64 QAM in the first CQI table are some entries of 64QAM in a second CQI table, and the some entries of 64QAM in the second CQI table are as follows:
the some entries correspond to consecutive CQI indexes, and are at least one entry other than an entry corresponding to a largest CQI index in all entries whose modulation schemes are 64QAM in the second CQI table; or
the some entries comprise N entries whose modulation schemes are 64QAM in the second CQI table and that correspond to consecutive CQI indexes, and a first entry in the N consecutive entries is an entry whose modulation scheme is 64QAM in the second CQI table and that corresponds to a smallest CQI index, wherein N is a positive integer greater than or equal to 1 and less than or equal to 5, wherein the second CQI table is as following:
Code rate ×
Spectral
CQI index
Modulation scheme
[1024]
efficiency
0
Out of range
1
Quadrature phase shift
78
0.1523
keying (QPSK)
2
QPSK
120
0.2344
3
QPSK
193
0.3770
4
QPSK
308
0.6016
5
QPSK
449
0.8770
6
QPSK
602
1.1758
7
16QAM
378
1.4766
8
16QAM
490
1.9141
9
16QAM
616
2.4063
10
64QAM
466
2.7305
11
64QAM
567
3.3223
12
64QAM
666
3.9023
13
64QAM
772
4.5234
14
64QAM
873
5.1152
15
64QAM
948
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